Answers

depends on the market, so it's IMPOSSIBLE to advise the correct approach/choice in this question. However, I'd lean towards a desktop/web app for anything that is trying to accomplish 'platform' level mechanics.... most noobs will use the term platform and app interchangeably but there is a huge difference: platforms are designed for OTHER COMPANIES/brands/power-users to BUILD FUNCTIONALITY on top of/extend the use for their specific purposes... TWITTER is a platform. "an app to buy/sell stuff in X new way or Y speciality or Z local/geographic market" is just an app that is trying to say it's cool by calling itself a platform because there's type major types of uses & 'transactions' involved.... a CHATROOM is an app... TWITTER is a platform. Hope that helps.

You could also consider sending the data directly to Google Analytics if you are already familiar/using the platform; the API might help you correlate data with website visitors, but this is a really ambiguous question without more information than 'hardware used in venues/real world events'... if there's no direct internet access available to be wired to the machine, you could easily give it a mobile-data card with the cell services that let you share data plans to multiple devices.

ughh this is a big hairy question for many businesses and from past experience consulting, it's going entirely succeed/fail based on your specific business & it's existing operational behavior / employees comfort level in adopting new tools. Integrating across existing software/tools is always the problem here, and is almost what kills every effort in improving one's business systems(sales/biz-dev optimization in your case); There's so many team/project management services online it'd be pointless to list without knowing more about your existing systems & business size/stage with employees. HOWEVER, to end on your point of 'value for the business' as opposed to the bias raw REVENUE creation being attributed to each employee: sounds like you want/need a simplified way of logging events in which are abstract in value but could at the end of say each week/month be reviewed/curated/compiled into understanding metrics/tags/categories for a manager/CEO to review within each department/employee/manager... quantification is what really hurts this as all businesses are complex in their own specific value offer/delivery, so all I can think of to end on is: let each level of management comment/tag/note their own interpretation of the 'quantified or tagged' value be it $10, 10k, or satisified customer, repeat buyer, new bizness market identified, marketing opportunity identified, social media result(hearts, likes, retweets, etc); Hope that helps